Calendar for clocks



(Modal.)'

J. P.v HENDERSON.

Calendar for Clocks.

No. 227,250. atented May 4,1880.

UNITED STATES PATENT OFFICE.

JOHN F. HENDERSON, OF BOWLING GREEN, KENTUCKY.

CALENDAR FOR CLOCKS.

SPECIFICATION forming part of Letters Patent No. 227,250, dated May 4, 1880.

(Model.)

To all whom it may concern:

Be it known that 1, JOHN F. HENDERSON, of Bowling Green, in the county of Warren, and in the State of Kentucky, have invented certain new and useful Improvements in Calendars for Clocks and Watches and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to theaccom 'ianying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of my invention consists in the construction and arrangement of a calendar for clocks and watches, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawings, in which Figure 1 is a face view of a clock embodying my invention. Figs. 2 and 3 are detail views of the same.

i A represents the face of a clock. minute-hand, and G the hour-hand.

B is the D represents a circular dial-plate, having its face divided into thirty-one equal parts, and numbered from one to thirty-one, inclusive; or the odd numbers may be omitted and simply represented by dots, as shown in Fig. 3, which gives more room for the even figures.

In the clock-face Ais made a small hole directly under the figure 12, and the calendardial D has a central hole. A hollow bearing, a, is passed through the hole in the dial D and into the hole in the clock-face, and fastened in any convenient manner. A hand, F, is fastened on said bearing and pointing directly upward.

The periphery of the dial D is formed with sixty-two equidistant cogs, and upon the hourhand 0, or the barrel of said hour-hand, is a single cog, b, taking into the cogs ot' the dial.

It will readily be seen that for every revolution of the hour-handtwelve hours-the dial D will be turned the distance of one of its cogs, thus indicating hall" a day, and when the hounhaud completes the second revolution the dial is turned far enough for thehand F to indicate the next day.

This invention may be applied to clocks and watches, both old and new.

'When necessaryto skip a day, or, after Februa-ry, two or three days, the dial can easily be turned with the finger.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

A calendar for clocks and watches consisting ofa dial, D, having its face divided into thirty-one parts and its periphery provided with sixty-two cogs, a stationary hand, F, and a single cog, b, on the hour-hand of the clock or watch. substantially as herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 30th day of January, 1880.

JOHN F. HENDERSON.

Vitnesses:

B. L. TUCKER, A. ORNBERG. 

